diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da036b50..d6cab13b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,13 +37,13 @@ jobs:
       - name: Display Pip Versions
         shell: bash -l {0}
         run: pip list
-      - name: Download "build" folder (cache)
-        uses: dawidd6/action-download-artifact@v11
-        with:
-          workflow: cache.yml
-          branch: main
-          name: build-cache
-          path: _build
+      # - name: Download "build" folder (cache)
+      #   uses: dawidd6/action-download-artifact@v11
+      #   with:
+      #     workflow: cache.yml
+      #     branch: main
+      #     name: build-cache
+      #     path: _build
       # Build Assets (Download Notebooks and PDF via LaTeX)
       - name: Build PDF from LaTeX
         shell: bash -l {0}
diff --git a/environment.yml b/environment.yml
index a173c191..855fd474 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,7 +3,7 @@ channels:
   - default
 dependencies:
   - python=3.13
-  - anaconda=2025.06
+  - anaconda=2025.12
   - pip
   - pip:
     - jupyter-book==1.0.4post1
@@ -15,5 +15,9 @@ dependencies:
     - sphinxcontrib-youtube==1.4.1
     - sphinx-togglebutton==0.3.2
     - sphinx-reredirects==1.0.0
+    # TODO: Check for SymPy 1.14.1+ when available
+    # Pinned to 1.13.3 due to bug in 1.14.0 causing OverflowError in solve() 
+    # for symbolic differentiation in solow.md (factorint issue with large mpz)
+    - sympy==1.13.3